Ventilated toilet bowl



Nov. 29, 1955 w. v. SCOTT ET AL VENTILATED TOILET BOWL Filed May 6, 1952I L v,

Thurman F Scott INVENTORS. William vtscott 771 M flmnm Emblem flltorneys.

United States Patent VENTILATED TOILET BOWL William V. Scott, Bowie, andThurman F. Scott, Wichita Falls, Tex.

Application May 6, 1952, Serial N0. 286,336

-1 Claim. 01. 4-216 This invention relates to ventilated toilet bowls,and more particularly to a toilet bowl having a built-in air ductconnected to a vent pipe or stack for drawing air from the spacesurrounding the bowl through the bowl and exhausting such air to theoutside of the building in which the toilet bowl is installed.

It is among the objects of the invention to provide an improvedventilated toilet bowl which has a built-inventilating duct and hassubstantially the same appearance as an unventilated bowl and can bemanufactured at substantially the same cost as the cost of manufacturingu'nventilated bowls of equivalent quality; which does not utilize anyportion of the flush system of the toilet bowl for ventilation andrequires no fan, valve or other mechanical contrivance other than theexhaust stack for effective operation; which requires no additionalinstallation expense other than the provision of the exhaust stack; andwhich is simple and durable in construction, and positive and effectivein operation.

Other objects and advantages will become apparent from a considerationof the following description and the appended claims in conjunction withthe accompanying drawings, wherein:

Figure 1 is a somewhat diagrammatic cross sectional view of a ventilatedtoilet bowl illustrative of the invention and an adjacent partition wallshowing the manner of installing the ventilated toilet bowl;

Figure 2 is a bottom plan view of a seat cushion or pad for the toiletbowl; and

Figure 3 is a fragmentary cross sectional view showing a somewhatmodified form of ventilated toilet bowl.

With continued reference to the drawing, the illustrated bowl, generallyindicated at 10, has a base portion 11 adapted to rest on the floor 12of a room, such as a bathroom, adjacent a partition wall 13 andincluding a trap 14, the discharge end of which is connected to a sewerline in a manner well known to the art. A bowl portion 15 extendsupwardly from the base 11 and connects at its bottom with the trap 14,as indicated at 16 and an extension 17 projects rearwardly from the bowlportion 15 above the base 11 and includes a water chamber 18. A toiletflush tank 20 of well known construction is mounted adjacent the wall 13and immediately above the extension 17 and is interiorly connected tothe water chamber 18 by a suitable disconnectible fitting, as indicatedat 21. The bowl portion 15 includes a conduit as indicated at 22 whichis tapering in cross section from its upper end to its lower end andwhich connects the water chamber 18 with the interior of the bowl 15 forflushing the toilet when the tank valve is opened by operation of theflush valve handle 24, as is well known to the art.

An air duct 25 extends through the water chamber 18 in the extension 17and comprises a tubular structure of the same material as the materialof the toilet bowl 10, molded in position at the time the bowl is formedand temperature hardened at the time the remainder of the bowl is sohardened. This structure 25 has a bore .26

2,724,840 Patented Nov. 29, 1955 2 extending longitudinally therethroughfrom the interior of the bowl portion 15 to the exterior of theextension 17 at the surface of the extension most remote from the bowlportion lS. v V

The bore 26 is of 'sufficient cross sectional area to provide anadequate flow of air from the interior to the exterior of the bowl andits end within the bowl is disposed above the normal water level in thebowl, as indicated at 27, but below thetop internal flange 28 whichprovides the water channel 23. v j

A lip 29 is formed on the inner surface of the bowl portion 15 at thetop of the end of the bore 26 opening into the bowl and this lip isinclined downwardly and inwardly of the bowl to prevent water from thechannel 23 flowing into the inner end of the bore 26 of the duct 25 andalso to conceal the inner end of the bore 26 from view. The duct 25 isspaced from the walls of the chamber 18 and declines toward the bowlportion 15. 7

An exhaust stack 30, such as a length of suitable thin walled pipe ortubing, is vertically mounted in the partition wall 13 between theopposite wall surfaces and terminates at its lower end at a levelslightly above the outer end of the bore 26. -An elbow fitting 31extends through the side of partition wall 13 adjacent the toilet bowl-1'1 and has one end disposed within the 'wall and telescopicallyreceived in the lower end of the exhaust or vent stack 30. The other endof the elbow fitting 31 is inserted into the outer end of the bore 26and secured therein by a suitable expansion joint.

The expansion joint may comprise an external annular flange 32 on theend of the fitting 31 received within the bore 26, a sleeve 33 ofelastic material, such as vulcanized rubber, surrounding the fittingadjacent the flange 32, a washer 34 surrounding the fitting at the endof the sleeve 33 remote from the flange 32 and a nut 35 threaded onto anexternally screw threaded portion of the fitting and bearing against thewasher 34 to compress the sleeve 33 longitudinally and expand itradially in the corresponding end portion of the bore 26 and therebyfirmly secure the corresponding end of the elbow fitting 31 in the bore26 with an airtight seal.

A flat pad 36 of elastic material, such as vulcanized rubber, is securedto the under surface of the toilet seat 37 and extends entirely aroundthe under surface of the toilet seat except for an opening 38 at thefront of the seat. When the seat is lowered onto the top surface of thebowl portion 15 and the seat cover 39 is lowered onto the seat the bowlis closed except for the ventilating opening 38. Air may flow throughthe opening 38 into the bowl above the water in the bottom of the bowland out of the bowl through the bore 26 of the ventilating duct 25 andthrough the elbow fitting 31 to the exhaust stack 30 through which itflows to the exterior of the building in which the toilet bowl isinstalled.

The air duct structure 25 does not utilize any portion of the flushingsystem of the toilet bowl for ventilation nor in any way change thecapacity of the flushing system since the extension 17 may be enlargedto provide a water chamber 18 as large as or larger than thecorresponding water chamber provided in an unventilated toilet bowl andthe enlarged extension will provide a better support for the flush tank20 mounted thereon.

In the modified arrangement illustrated in Figure 3, the duct structure25 is first provided as a separate tube 40 of suitable material, such asthe ceramic material of which the toilet bowl is formed and is providedat one end with an outwardly inclined lip 41 which corresponds to thelip 29 of Figure 1.

In manufacturing a toilet bowl with the separate duct structure 40, thepreformed tubular duct is merely set in place in the form or mold inwhich the toilet bowl is formed before the material to form the toiletbowl is placed in the mold and, as the material forming the bowl isplaced in the mold the duct structure is molded into the toilet bowl andis permanently secured therein when the material forming the bowl isheat hardened.

The invention may be embodied in other specific forms without departingfrom the spirit or essential characteristics thereof. The presentembodiments are, therefore, to be considered in all respects asillustrative and not restrictive, the scope of the invention beingindicated by the appended claim rather than by the foregoingdescription, and all changes which come within the meaning and range ofequivalency of the claim are, therefore, intended to be embracedtherein.

What is claimed is:

A toilet comprising a base portion and a bowl portion, said base portionhaving a trap therein, said trap having a discharge end adapted andarranged to be connected to a sewer line, said bowl portion having abottom and a top and being extended upwardly from said base portion andbeing connected at its bottom with said trap, a rearwardly extendingextension on said bowl portion having a water chamber therein, saidchamber having an upper end and a lower end, a conduit tapering in crosssection being connected at its end having the largest cross section tosaid chamber at its lower end and at its other end to said bowl portionadjacent the bottom thereof, said chamber having a second conduitopening into its upper end and adapted and arranged to be connected to asource of water under pressure, a tubular air duct traversing saidchamber and opening at one end into said bowl portion and spaced fromsaid bottom and said top, said air duct at its other end remote fromsaid bowl portion being adapted and arranged to be connected to a flue,said air duct declining toward said bowl portion, a seat having a topand bottom surface hingedly secured to the top of said bowl portion,said seat having a resilient pad on its bottom surface engageable withthe top of said bowl portion when in closed condition, and said padhaving a cutaway portion defining a relatively small air opening at theside opposite said extension when closed, providing for flow of air intosaid bowl portion and to said air duct.

References Citedin the file of this patent UNITED STATES PATENTS 470,740Bluhm Mar. 15, 1892 688,234 Brown Dec. 3, 1901 704,471 Brown July 8,1902 936,561 Pennington Oct. 12, 1909 1,177,384 Cochran Mar. 28, 19161,211,137 Grant Jan. 2, 1917 1,213,113 Lange, Jr. Jan. 16, 19171,861,501 Lowther June 7, 1932 1,885,715 Hanson Nov. 1, 1932 2,058,436Friel Oct. 27, 1936 2,396,371 Harbeke Mar. 12, 1946 2,452,282 Auer Oct.26, 1948 FOREIGN PATENTS 3,019/1903 Great Britain June 4, 1903 OTHERREFERENCES Louis Lipp Company Catalog H.

